TIEN DUNG, Le; 						HONG QUANG, Dao.
 Field Investigation of Face Spall in Moderate Strength Coal Seam at Vang Danh Coal Mine, Vietnam.
<strong>VNU Journal of Science: Earth and Environmental Sciences</strong>, [S.l.], v. 37, n. 2, june 2021.
ISSN 2588-1094.
Available at: &lt;<a href="https://js.vnu.edu.vn/EES/article/view/4639" target="_new">https://js.vnu.edu.vn/EES/article/view/4639</a>&gt;. Date accessed: 30 apr. 2024.
doi: <a href="https://doi.org/10.25073/2588-1094/vnuees.4639">https://doi.org/10.25073/2588-1094/vnuees.4639</a>.